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1、one orange two pears six pears three apples four bananas nine apples three boys two girls one dog boxes,classes,buses,watches,fishes babybabies,familyfamilies,dictionary-dictionaries heroes negroes potatoes tomatoes 其他加其他加sknifeknives,leafleaves jeeps,bikes,apples,pens,bags boxes,classes,buses,watch
2、es,fishes babybabies,familyfamilies,dictionary-dictionaries tomatoes,potatoes knifeknives,leafleaves你看出规律了吗？你看出规律了吗？1.一般直接在名词后面加一般直接在名词后面加“S”2.以以 s,x,ch,sh,ss结尾的单词，必须加上结尾的单词，必须加上es 3.以辅音字母以辅音字母+y结尾的单词，把结尾的单词，把Y变成变成i再加再加es4.以辅音字母以辅音字母+O结尾的单词结尾的单词,后加后加es（photo除外）除外）5.以以f或或fe结尾的单词。把结尾的单词。把f变变v再加再加es 人人
3、称称代代词词（主主格格）第第一一人人称称（单单数数）第第二二人人称称（单单数数）第三人称第三人称 （单数单数）第第一一人人称称（复复数数）第第二二人人称称（复复数数）第第三三人人称称（复复数数）Iyouhesheitweyouthey 形形容容词词性性物物主主代代词词第第一一人人称称（单单数数）第第二二人人称称（单单数数）第三人称第三人称（单数单数）第第一一人人称称（复复数数）第第二二人人称称（复复数数）第第三三人人称称（复复数数）myyourhis heritsouryourtheir形容词性物主代词形容词性物主代词名词（名词（n.)thesethosetheywethisthatheshe
4、itIisamareyouyou He is Jims friend.Is it an orange？They areJimsfriends.Are they oranges?She is a girl.They aregirls.单数句改复数句的方法：单数句改复数句的方法：1.把单数主语改为复数主语；把单数主语改为复数主语；2.把把am,is改为改为are;3.把单数可数名词改为复数名词；把单数可数名词改为复数名词；4.注意不能改变句式结构。注意不能改变句式结构。This is a book.These are books.That is an old map.Those are old m
5、aps.请把单数意义的句子变为复数意义的句子。请把单数意义的句子变为复数意义的句子。1.This is a watch.2.Is that her key?3.Is the boy your friend?These are watches.Are those her keys?Are the boys your friends?4.That is my photo.5.This is his pencil case.These are his pencil cases.Those are my photos.Those are erasers.Are those erasers?Yes,they are./No,they arent.They are girls.Are they girls?Yes,they are./No,they arent.Those are not erasers.They are not girls.